May 23, 2024

The Edwards Aquifer is San Antonio’s source of drinking water. It is an underground layer of porous, honeycombed water-bearing rock about 300 to 700 feet thick. The San Antonio Water System (SAWS) uses this water as well as other several non-Edwards Aquifer water sources to secure the city’s water future.

This is a current reading from the J-17 Index Well. Refreshes every 15 minutes.

Quality Reports from SAWS

Year-round watering is when the City of San Antonio is not under any drought restrictions.

If San Antonio does enter any drought restrictions, there are four stages of watering restrictions San Antonio can enter.

Stage 1: Aquifer level drops 660 feet mean sea level 

Stage 2: Aquifer reaches 650 feet mean sea level

And don’t forget to follow these year-round rules:

LANDSCAPE WATERING

Watering with an irrigation system or sprinkler is allowed only once a week from 7-11 a.m. and 7-11 p.m. on your designated watering day as determined by the last number of your street address.

Last Digit of Address Watering Day
0 or 1 Monday
2 or 3 Tuesday
4 or 5 Wednesday
6 or 7 Thursday
8 or 9 Friday
No watering on weekends

Stage 3: Aquifer reaches 640 feet mean sea level 

And don’t forget to follow these year-round rules:

LANDSCAPE WATERING

Landscape watering is allowed only EVERY OTHER WEEK, from 7-11 a.m. and 7-11 p.m. with an irrigation system, sprinkler or soaker hose, and only on your designated watering day.

Last Digit of Address Watering Day
0 or 1 Monday
2 or 3 Tuesday
4 or 5 Wednesday
6 or 7 Thursday
8 or 9 Friday
No watering on weekends

Stage 4: Aquifer becomes insufficient to meet customer demand

All stage 3 restrictions become in effect and landscape irrigation and drought surcharge is applied to monthly bills. Water can only be utilized at the discretion of the city council.